The many critical functions of tears in the body are discussed from an intelligent design worldview. As more research is carried out, often what once were felt to be ‘simple structures’ in biology turn out to be extremely complex. Research has now shown that tears are a complex fluid that is required for long-term vision. Furthermore, although all animals that live in the atmosphere and possess eyes produce tears, only humans can shed emotional tears—a response that has been found to have several health benefits. This fact is indicative of one more difference between humans and animals.